24 RHOPALOCERA AFRICii: AUSTRALIS. 



tlack, longitudinal streaks in discoidal cell, and a black spot 

 between median and submedian nervures ; transverse band 

 much narrowed (particularly the portion near inner-margin), 

 radiating irregularly on discoidal nervules ; broad, longitu- 

 dinal, black streaks from hind-margin to transverse band, as 

 in forewing ; fringe varied with brown and white. 



The above description has been made from Stoll's figure of Papillo 

 Messalina, in default of actual specimens of the insect. It is on StoU's 

 authority that I include the species as South African. Mr. Westwood 

 gives P. Cynoria, of Boisduval (not the Cpiorta of Fabricius) as a synonym 

 of this species; and states that specimens of P. Messalina are in both the 

 British and Bristol Museums, from Sierra Leone. Owin^ to no South 

 African specimen existing in the collectiou of the British Museum, I over- 

 looked this species when in England ; and only discovered it on a re-exami- 

 nation of StoU's work, a fine copy of wliich is in tlie Public Library at 

 Cape Town. The latter author mentions the species as among those brought 

 by Le Vaillant from Caffraria. 



Family 2.— PIEEIDiE. 



PlERID.E, Dup. 



PiERiDES, Boisd. 



PiERiNyE and C0LIAN.E, Swains. 



PiERiDi (sub-fam. of Papilionid.e), StepJi. 



Imago. — Head rather small ; eyes prominent ; antennce 

 never very long, commonly rather slender, and with an abrupt 

 flattened club, but in some Genera short, thickening gradu- 

 ally to the tip, which is somewhat truncate ; palpi hairy, 

 sometimes rather long, always projecting beyond head. Tho- 

 rax rather short, stout, clothed with silky hairs. Fore-wing 

 more or less pointed at apex ; costa slightly arched ; hind- 

 margin nearly straight or slightly convex ; inner-margin 

 straight or very slightly emarginate ; discoidal cell closed, the 

 upper discoidal nervule generally united to subcostal nervure. 

 Hind-wing rounded at apex ; costa very little arched ; hind- 

 margin very convex, very slightly scalloped, or entire ; 

 inner-margins convex, covering more or less of basal portion 

 of abdome7i ; discoidal cell closed. Legs rather short, slender, 

 all six fitted for walking. Abdomen slender, long, much 

 flattened laterally. 



Larva. — Rather slender, more or less clothed with short 

 hairs, tapering a little to each extremity. 



Pupa. — Much angulated, slender, head with a single pro- 

 jecting point ; attached by the tail and a central silken band, 

 as in the Papilionida\ 



The species of this Family are usually remarkable for the 

 light ground-colour of their wings, varying from pure white 



